Roll for napping or other machines



(No Model.)

K J. D. SCHOPIELD. ROLL PoR NAPPING 0R oTHBR MACHINES.

YPauzented July 7, 1,891.

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UNITEf) STATES PATENT OFFICE.

JOHN DOBSON SCI-IOFIELI), OF PHILADELPHIA, PENNSYLVANIA.

ROLL FOR NAPPING OR OTHER MACHINES.

SPECIFICATION forming part of Letters Patent No. 455,729, dated July '7,1,891.

Application tiled October 28, 1890. Serial No. 369,567. (No model.)

4invented a certain new and useful Improvement in Rolls for Napping andother Maehines, of which the following is a description, reference beinghad to the annexedV drawings, making parthereof.

The natureof my inventionwill fullyappear fromthefollowingdescriptionandelaims. Its object may be brieiiy stated as follows:

The rolls used to create a nap on woolen and cotton fabrics are mountedin the napping-machine and are of a length adapted to manipulate fabricsof the greatest width which are called for the ordinary demands oftrade. Napping-machines are well known in the arts and require nospecial description here. The rolls used, for producing or throwing upthe nap are also well known to those skilled in the art of manufacturingnappedfabrics. Vhile the napping-rolls are adapted to manipulate fabricsof great width, it frequently happens that the same machine is used tocreate a nap on goods of less width. 'The operative Will almostinvariably, to secure an even grasp'of the points of the teeth orneedles of the wire clothing upon the fabrics,`

feed the narrow-width goods to the middle of the rolls. the wireclothing near the ends of the rolls is disengaged and the main wear isthrown upon the middle of the roll. The middle of the roll thus becomesdulled and worn, while its end parts are sharp, and being comparativelyunworn extend beyond the line of the middle part. Thus when subsequentlya wider fabric is to be napped which will cover the whole roll, ornearly so, the ends of the latter will tear the goods, while the rest ormiddle part of the roll will do but slight work in the napping. To avoidthis the wire teeth will have to be ground at the ends to produce aneven wearing-surface to accommodate the wide goods, and the whole of thewires will have to be sharpened evenly. In this way the wired surface byrepeated grindings is worn away uselessly instead of being worn awayonly in the proper performance of its function. This grinding to eventhe surface in the ordinary course of manufacture becomes necessary Itthusfrequently happens that,

for the reasons stated about every five or six weeks, and within thattime, with the varying widths lof cloth, the roll is doing more or lesspoor work. I obviate this defect by using two tubes or sleeves upon aroller-shaft, the sleeves each covering one-half of the shaft, the jointbetween them being at or near the middle. At least the two sleevesections cover the whole shaft, the joint being at some point betweenthe ends, each sleeve having its separate armature of wire-cloth to makea whole roll-surface, whereby the wire-cloth which is at the ends for aperiod can be changed to a middle position by drawing the "tubes offtheroll-shaft and reversing them,

so that what was before their extreme ends meet in the middle and formthe joint there. These sleeves can be keyed upon the shaft, so as to bemadev to turn with it, or a clutchjoint can be used with set-screws, asshown. Each tube will form a section of the roll, and it is evident thatthe number of these roll or tubular sections can be increased to suitthe requirements of the work or the will of the operative.- By thesechanges of position of the tubes an equalization of the wear is insured.Various methods of securing the tubes so as to insure their turning withthe shaft upon which/they are mounted will suggest themselves to themind of any skilled mechanic. Rolls are used for various purposes towhich my invention can be applied where the wire-cloth covering is notemployed, but where the roll is liable to be overworked in one part.

It is evident that there is no 'necessity for making the tubes of evenlength, providing that they present a whole roll-surface. Therefore thejoints between the tubes can be in the series brokein7 whereby a jointbetween two tubes, which upon one roll would leave any part of thesurface of the fabricbeing treated not acted upon, would have theinaction compensated for by the full surface of the next napping-roll,the joint between the tubes of which latter would break with thefirst-named joint. In the use ot' my improvement with calendar-rolls orrolls used to express moisture the tubes are used bare without clothing.The system can be used for garneting-machines.

In the drawings, Figure l is a longitudinal IOO elevation of anapping-roll, a clutch-joint and set-screws being shown to insure therevolution of the roll with its shaft; Fig. 2, a similar View of theroll-shaft, showing the tubes and leather wrapping in longitudinalsection on the line l 2 of Fig. l; Fig. 3, a vertical cross-section ofFig. l on the line 3 4 of the latter; Fig. 4, perspective views showingthe clutch-joint connections of two tubes; Fig. 5, a similar view of acollar adapted to make a clutch-joint with one ofthe ends of a tube andpierced to receive a set-screw; Fig. (5, a View, partly in elevation andpartly in longitudinal section, showing a feather or key on the shaft toinsure the revolution of the tubes with it; Fig. 7 across-sectional Viewon the line 5 6 of Fig. 8, which latter shows a roll consisting of ashaft provided with a key or feather and reversible tubes, the latterbeing plain and free from wire clothing; Fig. 9, a series of the rollsshown in Fig. 8, showing broken joints.

Ais the roll-shaft; B B', the journals; C I), two roll'tubes adaptedlike sleeves to slide over the shaft and't closely thereon. l

E E are short collars adapted to engage with the outer ends of the tubesC D by clutchjoints F F.

G G are set-screws piercing these collars and entering the shaft A, andthus insuring the turning of the tubes with the shaft.

F is a clutch-joint between 'the adjoining inner ends of the tubes C D;H H, the leather or rubber clothing of the tube, in which is set thewire facing I I.

J J are screws securing the ends of the clothing to the tubes C D.

K is a key or feather on sha-ft A, engaging in grooves L L to insure therevolution of the tubes C D with the shaft. The key or feather may beused; but I prefer the system of clutch-joints, because if itis desiredto use tubes of different lengths or three or more tubes on the shaftthe clutch-joint is more convenient and is cheaper of construction. Insuch cases a very long key or feather would have to be used, thusnecessitating very great care and circumspection in the construction andfitting.

My rolls can be used in series, and, as shown in Fig. 9, the points atwhich the unions of sleeve to sleeve are made in the 'middle can be madeto break joint with the neXt-roll of the series, whether the seriesconsists of two or more rolls. The sleeve-section and its clothing, whenmy rolls are used for napping or garneting machines, are practicably oneuntil the clothing is stripped off.

The wires of the napping-machine or the teeth of the garneting-machineconstitute the wearing-surface of t-he roll and practically form part ofthe reversible sleeves.

Vhat I claim as new is- 1. A napping-roll consisting of a middle shaftA,tubes or sleeves C D, meeting between the ends of the shaft and armedwith wire clothing set independently upon each sleeve, said sleevesbeing adapted to turn with said shaft and to be withdrawn from the samewith their clothing and reversed, substantially as described.

2. A napping-roll eonsisting'of a middle shaft A, tubes o1' sleeves C D,meeting between the ends of the shaft and provided at each end with ashort spiral cut and shoulder, whereby either end of one sleeve isadapted to couple with either end of the other and to form aclutch-joint, said sleeves bein g adapted to revolve with the shaft andeach provided with separate wire clothing and also adapted to be drawnoff the shaft and reversed, substantially as described.

3. A roll consisting of a middle shaft A and several tubes or sleeves CD, meeting between the ends-of the shaft and provided at each end with ashort spiral cut and shoulder, whereby either end of one sleeve isadapted to couple with either end of the other and to form a clutch-joint, said sleeves being adapted to revolve with the shaft and eachprovided with separate wire clothing and also adapted to be drawn offthe shaft and reversed, collars E E', the inner edges of which. coincidewith the spiral cut and shoulder of the sleeves, and screws J J, tosecure the collars upon the shaft, substantially as described.

4. A roll consisting of a middle shaft and outer tubes or sleeves tocover the shaft, the said tubes'meeting between the ends of the shaft,forming a joint and adapted to turn therewith, and also to be removedtherefrom and reversed, whereby the wearing-surface o f the rollsintermediate the ends can be changed at pleasure, substantially asdescribed.

5. A series of rolls, each roll consisting of a middle shaft and outertubes or sleeves to cover the shaft, the said tubes meeting between theends of the shaft, forming a joint and adapted to turn therewith, andalso to be removed therefrom and reversed, whereby the wearing-surfaceof the rolls intermediate the ends can be changed at pleasure,substantially as described.

G. A series of rolls, each roll consisting of a middle shaft and outertubes or sleeves to cover the shaft, the said tubes meeting between theends ofthe shaft, forming a joint and adapted to turn therewith, thejoints of one wearing-surface of the roll breaking with the other, saidsleeves also being adapted to be removed from the shaft and reversed,whereby the wearing-surface of the rolls intermediate the ends can bechanged at pleasure, substantially as described.

In witness that the above is my invention I have hereunto set my hand.

JOHN DOBSON SCHOFIELD.

Witnesses:

GEORGE E. BUCKLEY, JOHN L. HARVEY.

IIO

